taeevo - ics cool energy...chapter 1 - general information taeevo015÷351 the data in this manual...

WATER CHILLERS

OPERATING AND MAINTENANCE MANUAL

38178800546

Original instructions

TAEevo015÷351

1OPERATING AND MAINTENANCE MANUAL - Contents

TAEevo015÷351The data in this manual are not binding and may be changed by the manufacturer without notice. Reproduction of this manual, even partial, is strictly prohibited.

CONTENTSCONTENTS .......................................................................................................................................................1

GENERAL INFORMATION ................................................................................................................................3

1.1 How to interpret the model...................................................................................................... 4SAFETY.............................................................................................................................................................5

2.1 General .................................................................................................................................... 52.2 Liquids of the user circuit........................................................................................................ 52.3 Lifting and carriage precautions .............................................................................................. 52.4 Installation precautions............................................................................................................ 62.5 Precautions during operation................................................................................................... 62.6 Maintenance and repair precautions ........................................................................................ 62.7 Refrigerant gases ..................................................................................................................... 7

2.7.1 Refrigerant safety schedule ....................................................................................................................... 7TECHNICAL DATA............................................................................................................................................9

3.1 Other data relative to the standard machines........................................................................... 93.1.1 Dimensions ................................................................................................................................................ 93.1.2 Characteristics of pumps and of the fans ................................................................................................ 103.1.3 Sound Level Measurements ..................................................................................................................... 11

DESCRIPTION.................................................................................................................................................12

4.1 Components ............................................................................................................................. 124.2 Cooling circuit ......................................................................................................................... 124.3 Compressors ............................................................................................................................ 124.4 Condenser ................................................................................................................................ 124.5 Evaporator ............................................................................................................................... 124.6 Tank......................................................................................................................................... 124.7 Pump........................................................................................................................................ 134.8 Fans.......................................................................................................................................... 134.9 Casing ...................................................................................................................................... 134.10 Materials in contact with the liquid to be cooled .................................................................... 144.11 Minimum distances from walls in the installation ambient..................................................... 144.12 Electrical circuit....................................................................................................................... 144.13 Negative ambient temperatures (not present in models for 460/3/60 power supply).............. 14INSTALLATION...............................................................................................................................................15

5.1 Inspection ................................................................................................................................ 155.2 Positioning............................................................................................................................... 155.3 Antifreeze protection ............................................................................................................... 15

5.3.1 Operating limits ....................................................................................................................................... 165.4 Hydraulic connections ............................................................................................................. 165.5 Expansion tank ........................................................................................................................ 175.6 Electrical connections.............................................................................................................. 18START UP .......................................................................................................................................................19

ELECTRONIC BOARD ....................................................................................................................................20

7.1 Display..................................................................................................................................... 207.1.1 Display icons ........................................................................................................................................... 20

7.2 Function of buttons.................................................................................................................. 207.2.1 Function of combined buttons ................................................................................................................. 21

7.3 Symbols and leds on the display ............................................................................................. 217.4 Remote terminal ...................................................................................................................... 21

7.4.1 Function of buttons .................................................................................................................................. 21

2 OPERATING AND MAINTENANCE MANUAL - Contents


7.5 Displaying during an alarm......................................................................................................217.5.1 Alarm icons ..............................................................................................................................................22

7.6 How to silence the buzzer ........................................................................................................227.7 First start up..............................................................................................................................227.8 Programming by keyboard .......................................................................................................22

7.8.1 Access to “Pr1” parameters (User level) ................................................................................................227.8.2 How to modify a parameter’s value .........................................................................................................22

7.9 Values displayed ......................................................................................................................237.10 Unit switching on / off .............................................................................................................237.11 How to put the unit in stand-by................................................................................................237.12 Function menu ( button) ......................................................................................................24

7.12.1 Access to Function menu ..........................................................................................................................247.12.2 Exit Function menu ..................................................................................................................................247.12.3 How to display the alarms “ALrM” .........................................................................................................247.12.4 How to reset an alarm “rSt” ....................................................................................................................247.12.5 How to display the alarm historic “ALoG” .............................................................................................247.12.6 How to reset the alarm history “ArSt” ....................................................................................................247.12.7 Displaying the operating hours of loads “C1Hr - C2Hr - PFHr” ..........................................................25

7.13 Other functions by keyboard ....................................................................................................257.13.1 How to display the Set Point ....................................................................................................................257.13.2 How to modify the Set Point .....................................................................................................................25

7.14 Compressors unloading function..............................................................................................257.15 Probe key..................................................................................................................................25OTHER COMPONENTS SETTING ....................................................................................................................26

8.1 Compressor integral protection (PI) .........................................................................................268.2 Refrigerant high and low pressure switches.............................................................................268.3 Compressor operation ..............................................................................................................26

8.3.1 Compressor regulation graphic in Chiller mode .....................................................................................268.4 Fan speed regulation.................................................................................................................278.5 Level sensor..............................................................................................................................28OPERATION AND MAINTENANCE ..................................................................................................................29

9.1 Operation..................................................................................................................................299.2 Maintenance .............................................................................................................................299.3 Unit access................................................................................................................................299.4 Emptying the process water circuit ..........................................................................................309.5 Maintenance schedule ..............................................................................................................30TROUBLE SHOOTING.....................................................................................................................................31

SETTING TABLES ...........................................................................................................................................34

11.1 Parameter setting ......................................................................................................................3411.1.1 Thermoregulation parameters .................................................................................................................3411.1.2 Configuration parameters ........................................................................................................................3411.1.3 Dymanic set point parameters (NBCP1OT ENABLED FUNCTION) .....................................................3511.1.4 Energy Saving parameters (NOT ENABLED FUNCTION) ....................................................................3511.1.5 Compressor parameters ...........................................................................................................................3511.1.6 Fan parameters ........................................................................................................................................3511.1.7 Antifreeze support resistance parameters ................................................................................................3511.1.8 Defrost parameters (NOT ENABLED FUNCTION) ................................................................................3511.1.9 Alarm parameters .....................................................................................................................................3511.1.10LASER parameters (NOT ENABLED FUNCTION) ................................................................................35

ALARMS..........................................................................................................................................................36

12.1 Alarm codes and actions ..........................................................................................................3612.2 Outlet blocking.........................................................................................................................39

3OPERATING AND MAINTENANCE MANUALChapter 1 - General Information


CHAPTER 1

GENERAL INFORMATIONThe machines described in this manual are called “WATER CHILLERS”.

This manual is written for those responsible for the installation, use and maintenance of the unit.

The components used are of high quality and all the projecting process, from the production to the unit checking, has been manufactured in

conformity with ISO 9001 norms.

In most applications, the liquid of the user circuit is water and the term “WATER” will be used even if the liquid of the user circuit is different

from water (e.g. a mixture of water and glycol).

Here below the term “PRESSURE” will be used to indicate the gauge pressure.

The following symbols are shown on the stickers on the unit as well as on the overall dimension drawing and refrigeration circuits in this manual.

Their meaning is the following:

Process water inlet

Process water outlet

Indications for lifting the unit

Water drainage point from the machine

Electric shock risk

Risk of burns from contact with high-temperature surfaces

Direction of the refrigerant fluid and water circuit

Direction of pump rotation (if installed)

Water filling point

Air vent

Hole for inserting bars for lifting the machine

Table 1 SYMBOLS

4 OPERATING AND MAINTENANCE MANUALChapter 1 - General Information


1 . 1 H o w t o i n t e r p r e t t h e m o d e l

ATTENTIONThis manual provides the user, installer and maintenance technician with all the technical information required for installation, operationand carrying out routine maintenance operations to ensure long life.If spare parts are required, this must be original.Requests for SPARE PARTS and for any INFORMATION concerning the unit must be sent to the distributor or to the nearest service centre,providing the MODEL and MACHINE NUMBER shown on the machine data plate and on the first page of this manual.

MODEL DESCRIPTION

refrigerant with 1 refrigeration circuit

power indicative of the refrigeration compressor in hp

E = hermetic type compressor

A = air-cooled condenser

T = “tank”; chiller with storage tank.

TAEevo XX 1

5OPERATING AND MAINTENANCE MANUALChapter 2 - Safety


CHAPTER 2

SAFETYThis machinery was designed to be safe in the use for which it was planned provided that it is installed, started up and maintained in accordance

with the instructions contained in this manual. The manual must therefore be studied by all those who want to install, use or maintain the unit.

The machine contains electrical components which operate at the line voltage, and also moving parts.

It must therefore be isolated from the electricity supply network before being opened. Maintenance operations involving work inside the machine

must be performed by skilled and adequately qualified personnel equipped with suitable protection means (active and passive, e.g. work gloves)

ton ensure work in maximum safety. Do not allow extraneous persons (such as children) where the machine is installed.

2 . 1 G e n e r a lWhen handling or maintaining the unit and all auxiliary equipment, the personnel must operate with care observing all instructions concerning

health and safety at installation site.

ATTENTIONMost accidents which occur during the operation and maintenance of the machinery are a result of failure to observe basic safety rules orprecautions.

An accident can often be avoided by recognising a situation that is potentially hazardous.

The user should make sure that all personnel concerned with operation and maintenance of the unit and all auxiliary equipment have read and

understood all warnings, cautions, prohibitions and notes written in this manual as well as on the unit.

Improper operation or maintenance of the unit and auxiliary equipment could be dangerous and result in an accident causing injury or death.

We cannot anticipate every possible circumstance which might represent a potential hazard.

The warnings in this manual are therefore not all-inclusive.

If the user employs an operating procedure, an item of equipment or a method of working which is not specifically recommended, he must ensure

that the unit and auxiliary equipment will not be damaged or made unsafe and that there is no risk to persons or property.

Any improper use of the machine will relieve the manufacturer from any liability for possible personal injury or property damage.

Arbitrary modifications made to the unit will automatically invalidate all forms of guarantee provided by the manufacturer.

ATTENTIONThe hot / cold water produced by MTA units cannot be used directly for domestic hygiene or food applications. In thecase of such applications, the installer is responsible for fitting an intermediate exchanger.If the intermediate exchanger is not fitted, the installer should affix a notice stating "non-drinking water".

2 . 2 L i q u i d s o f t h e u s e r c i r c u i tThe liquids of the user circuit must be compatible with the materials used. These can be water or mixtures of water and glycol, for example.

Additives and glycol suppliers must guarantee compatibility with the materials. For further information refer to 4.10 “Materials in contact with

the liquid to be cooled” .

ATTENTIONIf the liquids of the user circuit contains dangerous substances (e.g. ethylene glycol) is very important to collect any liquid which leaksbecause it could cause damages to the ambient. Furthermore, when the chiller is no longer used, dangerous liquids must be disposed of byfirms specialised and authorised for treating them.

2 . 3 L i f t i n g a n d c a r r i a g e p r e c a u t i o n sAvoid injury by using a hoist to lift heavy loads.

Check all chains, hooks, shackles and slings are in good condition and are of the correct capacity.

They must be tested and approved according to local safety regulations.

Cables, chains or ropes must never be applied directly to lifting eyes.

Always use an appropriate shackle or hook properly positioned.

Arrange lifting cables so that there are no sharp bends.

Use a spreader bar to avoid side loads on hooks, eyes and shackles.

When a load is on a hoist stay clear of the danger area beneath and around it.

Keep lifting acceleration and speed within safe limits and never leave a load hanging on a hoist for longer than is necessary. The weight values

shown in the following table were obtained with the unit empty, pump P3 and axial fans.

The manufacturer does not supply bars, belts and lifting hooks with the unit.

MODEL 015 020 031 051 081 101 121 161 201 251 301 351

Weight (kg) 127 132 200 220 331 386 405 416 553 650 740 757

Weight (lb) 280 291 440 485 729 850 892 917 1219 1433 1631 1668

Table 2 WEIGHTS

6 OPERATING AND MAINTENANCE MANUALChapter 2 - Safety


NOTEWeight values are guideline, with the water circuit empty. The values may vary in relation to the configuration of the unit (pump type, supplytype, and ventilation type).

2 . 4 I n s t a l l a t i o n p r e c a u t i o n sThe connections to be made are for the process water circuit. Use the electrical diagram accompanying this manual to for the connection to the

power grid.

2 . 5 P r e c a u t i o n s d u r i n g o p e r a t i o nOperation must be carried out by competent personnel under a qualified supervisor.

All the water piping must be painted or clearly marked in accordance with local safety regulations in the place of installation.

ATTENTIONNever remove or tamper with the safety devices, guards or insulation materials fitted to the unit or auxiliary equipment.

All electrical connections must comply with local codes.

The unit and auxiliary equipment must be earthen and protected by fuses against short-circuits and overloading.

When mains power is switched on, lethal voltages are present in the electrical circuits and extreme caution must be exercised whenever it is

necessary to carry out any work on the electrical system.

Do not open any electrical panels or cabinets or touch any electrical components or associated equipment while voltage is applied unless it is

necessary for measurements, tests or adjustments. Such work should be carried out only by a qualified electrician equipped with the proper tools

and wearing appropriate body protection against electrical hazards.

2 . 6 M a i n t e n a n c e a n d r e p a i r p r e c a u t i o n s

ATTENTIONWhen disposing of parts and waste material of any kind make sure that there is no pollution of any drain or natural water-course and that noburning of waste takes place which could cause pollution of the air. Protect the environment by using only approved methods of disposal.

Keep a written record of all maintenance and repair work carried out on the unit and auxiliary equipment. The frequency and the nature of the

work required over a period can reveal adverse operating conditions which should be corrected.

ATTENTIONUse only refrigerant gas specified on the specification plate of the unit.

Make sure that all instructions concerning operation and maintenance are strictly followed and that the complete unit, with all accessories and

safety devices, is kept in good working order. The accuracy of pressure and temperature gauges must be regularly checked. They must be

renewed when acceptable tolerances are exceeded.

ATTENTIONDo not weld or carry out any operation which produces heat near a system which contains oil or flammable liquids. The systems which maycontain oil or flammable liquids must be completely drained and cleaned (with steam, for example), before carrying out these operations.

Model 015÷161 Model 201÷351

7OPERATING AND MAINTENANCE MANUALChapter 2 - Safety


The adjacent components must always be screened with non-flammable material and if the operation is to be carried out near any part of the

lubrication system, or close to a component which may contain oil, the system must first be thoroughly purged, preferably by steam cleaning.

Never use a light source with an open flame to inspect any part of the machine.

For every unit establish a suitable time schedule for cleaning operations.

ATTENTIONIf replacement parts are needed use only original spares.

Avoid to damage the safety valves and other pressure relief devices.

All guards must be reinstated after carrying out repair or maintenance work.

ATTENTIONCheck the direction of rotation of electric motors (the pump if installed) when starting up the unit initially and after any work on theelectrical connections or switch gear.

Do not use flammable liquid to clean any component during operation. If chlorinated hydrocarbon non-flammable fluids are used for cleaning,

safety precautions must be taken against any toxic vapors which may be released.

ATTENTIONBefore removing any panels or dismantling any part of the unit, carry out the following operations:- Isolate the unit from the main electrical power supply by disconnecting the cable from the electrical power source.- Lock the isolator in the “OFF” position with a lock.- Attach a warning label to the main isolator switch conveying: “WORK IN PROGRESS - DON NOT APPLY VOLTAGE”.- Do not switch on electrical power or attempt to start the unit if a warning label is attached.

Coloured tracers can be used in service-maintenance operations.

Inspect all refrigerant circuit joints including connectors, flanges, and more generally all critical points (open joints) in order to prevent possible

leakage of refrigerant gas.

2 . 7 R e f r i g e r a n t g a s e sR407C is used as refrigerant in these units. Never attempt to mix refrigerant gases. The manufacturer's instructions and local safety regulations

should always be observed when handling and storing high pressure gas cylinders.

2.7.1 Refrigerant safety schedule

R407C

Denomination: 23% Difluoromethane (R32);25% Pentafluoroethane (R125);52% R134a

INDICATION OF THE DANGERS

Major dangers: Asphyxia.

Specific dangers: Rapid evaporation can cause freezing.

FIRST AID MEASURES

General information: Do not give anything to unconscious persons.

Inhalation: Take the person outdoors. Use oxygen or artificial respiration if necessary. Do not administer adrenaline or similar substances.

Contact with the eyes: Thoroughly wash with plenty of water for at least 15 minutes and call a doctor.

Contact with the skin: Wash immediately with plenty of water. Remove contaminated clothing immediately.

FIRE-FIGHTING MEASURES

Means of extinction: Any means.

Specific dangers: Pressure increase.

Specific methods: Cool the containers with water sprays.

MEASURES IN THE EVENT OF ACCIDENTAL LEAKAGE

Individual precautions: Evacuate personnel to safe areas. Provide adequate ventilation. Use means of personal protection.

Environmental precautions: Evaporates.

Cleaning methods: Evaporates.

8 OPERATING AND MAINTENANCE MANUALChapter 2 - Safety


HANDLING AND STORAGE

Handlingtechnical measures/ precautions: Ensure sufficient air change and/or extraction in the work areas.

recommendations for safe use: Do not inhale vapors or aerosols.

Storage Close properly and store in a cool, dry well-ventilated place. Store in its original containers. Incompatible products: explosives, flammable materials, organic peroxide.

CONTROL OF EXPOSURE/INDIVIDUAL PROTECTION

Control parameters: AEL (8-h e 12-h TWA) = 1000 ml/m3 for each of the three components.

Respiratory protection: For rescue and maintenance work in tanks, use autonomous breathing apparatus. The vapors are heavier than air and can cause suffocation, reducing the oxygen available for breathing.

Protection of the eyes: Safety goggles.

Protection of the hands: Rubber gloves.

Hygiene measures: Do not smoke.

PHYSICAL AND CHEMICAL PROPERTIES

Colour: Colourless.

Odour: Similar to ether.

Boiling point: -43.9°C at atm. press.

Flammability point: Non flammable.

Relative density: 1.138 kg/l at 25°C.

Solubility in water: Negligible.

STABILITY AND REACTIVITY

Stability: No reactivity if used with the relative instructions.

Materials to avoid: Alkaline metal, earthy alkaline metals, granulated metals salts, Al, Zn, Be, etc. in powder.

Hazardous decomposition products: Halogen acids, traces of carbonyl halides.

TOXICOLOGICAL INFORMATION

Acute toxicity: (R32) LC50/inhalation/4 hours/lab. rats >760 ml/l(R125) LC50/inhalation/4 hours/lab. rats >3480 mg/l(R134a) ALC/inhalation/4 hours/lab. rats = 567 ml/l.

Local effects: Concentrations substantially above the TLV can cause narcotic effects. Inhalation of products in decomposition can lead to respiratory difficulty (pulmonary oedema).

Long-term toxicity: Has not shown any cancerogenic, teratogenic or mutagenic effects in experiments on animals.

ECOLOGICAL INFORMATION

Global warming potential HGWP (R11=1): R125: 0.84 - R134a: 0.28

Ozone depletion potential ODP (R11=1): 0

CONSIDERATIONS ON DISPOSAL

Usable with reconditioning.

9OPERATING AND MAINTENANCE MANUALChapter 3 - Technical data


CHAPTER 3

TECHNICAL DATAThe main technical data are given on the machine data plate:

ATTENTIONThe performance of the unit mainly depends on the flow and temperature of the water in the user circuit and on the temperature of thethermal exchanger fluid of the condenser. These data are defined during the offer stage.

3 . 1 O t h e r d a t a r e l a t i v e t o t h e s t a n d a r d m a c h i n e s

3.1.1 DimensionsSee enclosures.

MODEL and CODE They identify the size of the unit and the type of construction.

MANUAL This is the code number of the manual.

SERIAL NUMBER This is the construction number of the unit.

MANUFACTURING YEAR This is the year of the final test of the unit.

VOLTAGE/PHASE/FREQUENCY Electric alimentation characteristics.

MAX. CONSUMPTION (I max) This is electrical current consumed by the unit during the limit working conditions.

INSTALLED POWER (P max) It is the power absorbed by the unit during the limit working conditions.

PROTECTION As defined by the EN 60529 European standard .

REFRIGERANT This is the refrigerant fluid in the unit.

REFRIGERANT QUANTITY This is the quantity of refrigerant fluid contained in the unit.

For TAEevo 015÷031 models

MAX. COOLING PRESSURE This is the design pressure of the refrigeration circuit.

MAX. COOLING TEMPERATURE This is the design temperature of the refrigeration circuit.

For TAEevo 051 models and upper models

MAX. COOLING PRESSURE HP SIDE This is the design pressure of the refrigeration circuit of the high pressure side

MAX. COOLING PRESSURE LP SIDE This is the design pressure of the refrigeration circuit of the low pressure side

USER CIRCUIT FLUID Fluid used by the unit (normally water).

MAX. UTILIZATION PRESSURE Max. designed pressure of the utilization circuit.

MAX. TEMPERATURE Design temperature of the user circuit; this should not be confused with the maximum working temperature which is established when the offer is made.

CONDENSER COOLING FLUID Fluid the machine uses to cool the condenser.

MAX. WORKING PRESSURE Maximum design pressure of the condenser cooling circuit.

MAX. TEMPERATURE Maximum designed temperature of the cooling circuit of the condenser.

SOUND PRESSURE LEVEL Sound pressure level in a free field in hemispherical irradiation conditions (open field) at a distance of 1 m from the machine, condenser side, and at 1.6 m from the ground.

AMBIENT TEMPERATURE Min. and max. cooling air temperature value.

WEIGHT This is the approximate weight of the unit before packing.

Table 3 DATA PLATE AND MEANING OF ABBREVIATIONS

10 OPERATING AND MAINTENANCE MANUALChapter 3 - Technical data


3.1.2 Characterist ics of pumps and of the fans

Model 015 020 031 051 081 101

Tank capacity water volume (litres)(galUS)

6016

6016

11530

11530

14037

25567

PUMP P3

water flow rate (m3/h)(gpm)

0.3/4.81.1/21.1

0.5/4.81.1/21.1

0.7/61.8/26.4

1.0/62.6/26.4

1.8/9.64.4/42.3

2.3/9.65.7/42.3

pump head (bar)(PSI)

3.2/1.443.8/20.6

3.2/1.443.8/20.6

3.1/1.544.9/22.6

3.0/1.444.5/21.3

2.9/1.344.2/19.0

2.9/1.543.8/22.6

nominal power (kW) 0.55 0.55 0.75 0.75 0.9 0.9

nominal power(460/3/60 Hz) (kW) 0.75 0.75 0.75 0.75 0.9 0.9

PUMP P5


0.3/4.81.1/21.1

0.5/4.81.1/21.1

0.7/4.81.8/21.1

1.0/4.82.6/21.1

1.8/134.4/57.2

2.3/135.7/57.2


5.4/2.979.4/42.1

5.4/2.979.4/42.1

5.4/3.178.9/45.4

5.3/3.278.3/46.6

5.2/2.875.8/40.6

5.1/3.175.7/45.8

nominal power (kW) 1.1 1.1 1.1 1.1 2.2 2.2

nominal power(460/3/60 Hz) (kW) 1.5 1.5 1.5 1.5 3 3

AXIAL FANSnumber of fans 1 1 1 1 1 2

total air flow(50/60 Hz)

(m3/h)(gpm)

405017831

350015410

690030380

640028178

920040506

1600070445

CENTRIFUGAL FANS

(NOT present with 460/3/60 Hz supply)

number of fans -- -- 1 1 1 2

available head (Pa)(PSI) -- --

1660.02

1850.02

2600.03

1400.02

total air flow (m3/h)(gpm)

-- --6900

303796400

281789200

405061360059878

Table 4 CHARACTERISTICS OF STANDARD UNITS

Model 121 161 201 251 301 351

Tank capacity water volume (litres)(galUS)

25567

25567

35092

35092

35092

35092

PUMP P3


3.0/187.0/79.3

3.7/188.4/79.3

3.9/188.8/79.3

4.4/188.8/79.3

4.9/2711.0/118.9

5.5/2711.4/118.9


2.8/1.641.5/24.2

2.8/1.741.4/25.1

2.8/2.041.4/29.8

2.8/2.041.4/29.8

3.3/0.948.8/13.3

3.2/0.848.7/12.3

nominal power (kW) 1.85 1.85 1.85 1.85 2.2 2.2

nominal power(460/3/60 Hz) (kW) 1,85 1,85 1,85 1,85 2.2 2.2

PUMP P5


3.0/137.0/57.2

3.7/138.4/57.2

3.9/308.8/132.1

4.4/308.8/132.1

4.9/3011.0/132.1

5.5/3011.4/132.1


5.1/3.175.6/45.8

5.0/3.275.4/47.1

5.2/1.876.5/27.1

5.1/1.876.5/27.1

5.1/1.967.2/27.3

5.1/1.876.1/26.1

nominal power (kW) 2.2 2.2 4 4 4 4

nominal power(460/3/60 Hz) (kW) 3 2.2 3 4 4 4

AXIAL FANSnumber of fans 2 2 2 2 3 3

total air flow(50/60 Hz)

(m3/h)(gpm)

1500066043

1420062520

1820080132

1760077490

23700104347

23700104347

CENTRIFUGAL FANS

(NOT present with 460/3/60 Hz supply)

number of fans 2 2 3 3 3 3

available head (Pa)(PSI)

1250.01

1380.2

2370.3

2450.3

1500.2

1500.2

total air flow (m3/h)(gpm)

1350059438

1278056268

1820080132

1760077490

2014588695

2014588695

Table 5 CHARACTERISTICS OF STANDARD UNITS

11OPERATING AND MAINTENANCE MANUALChapter 3 - Technical data


NOTEThe values in the table may vary in relation to the model and configuration of the unit. In this case reference should be made to the data in theoffer.

NOTEThe head is the head available to the user. It is possible for the pump installed to be different from the standard. There are two numbers forthe flow rate and pressure: the first number refers to the nominal conditions while the second to the maximum conditions.

3.1.3 Sound Level Measurements

* at distance of 1 metre (3,2 FT)

** global

*** (NOT present with 460/3/60 Hz supply)

Test conditionsNoise levels refer to operation of the unit at full load in nominal conditions.

Sound pressure level in hemispherical irradiation conditions at a distance of 1 m (3,2 FT) from the condenser side of the unit and height of 1.6 m

(5,2 FT) from the ground. Values tolerance ± 2 dB.

Sound power level: in compliance with ISO 3744.

Fan Lp dB(A) * Lw dB(A) **TAEevo 015 axial 67,4 80,4

TAEevo 020 axial 67,4 80,4

TAEevo 031axial 68,1 81,1

centrifugal *** 73,8 86,8









TAEevo 161axial 70,0 83










12 OPERATING AND MAINTENANCE MANUALChapter 4 - Description


CHAPTER 4

DESCRIPTION4 . 1 C o m p o n e n t s

The data relating to the materials refer to standard machines. In case of particular units special materials are used, so it is necessary to refer to the

data on the offer.

The machines essentially consist of the following components:

• Refrigeration compressor

• Condenser

• Evaporator

• Tank

• Pump

• Frame/outer panelling

• Electronic controller

4 . 2 C o o l i n g c i r c u i tModels TAEevo have a single refrigerant circuit with one or two compressors connected in parallel (tandem).

The circuits consist of the following components:

• refrigerant fluid used R407C;

• piston hermetic compressor or scroll compressor;

• fan pressure switch with on/off regulation;

• pressure switches for high and low refrigerant pressure;

• high pressure transducer for fan electronical regulation and for unloading (NOT present with 460/3/60 supply, centrifugal fans

and in TAEevo015÷020);

• liquid solenoid valve (with prismatic tank and plate-type evaporator);

• thermostatic throttle valve with external equalization (in models without prismatic tank present only from TAEevo031);

• dryer filter;

• liquid flow sight glass (in models without prismatic tank present only from TAEevo031);

• lamination capillary (only for TAEevo015÷020);

• refrigerant manometers (TAEevo031);

• Schrader service valves;

Consult the enclosed drawings for additional information.

4 . 3 C o m p r e s s o r sAll the machines are equipped with piston or SCROLL hermetic compressors, which are distinguished for their high energy efficiency, low

vibrations and consequent silence in normal operation.

They are cooled by the aspirated gas, protected against overheating of the windings by an internal module that monitors their temperature and,

upstream, by magnetothermic circuit breakers. These components are housed in a closed, but easily accessible, compartment.

4 . 4 C o n d e n s e rCondensation occurs through fin-pack coils consisting of copper tubes and collectors, aluminium fins and shoulders in galvanised sheet.

4 . 5 E v a p o r a t o rThe evaporator is a finned pack type; the water flows in contact with the finned surface and at a speed that guarantees low pressure drops, while

the refrigerant fluid flows inside the tubes.

A plate exchanger can be fitted as an alternative.

In the TAEevo models, the exchanger is protected against the formation of ice, caused by low evaporation temperatures, through an anti-freeze

function in the electronic controller. A probe monitors the temperature of the evaporator outlet water. If it is necessary to achieve a negative

ambient/water temperatures, a mixture of water and glycol must be used.

To drain the circuit, see Chapter 9.4 “Emptying the process water circuit” .

4 . 6 T a n kThe storage tank is cylindrical.

Alternatively a prismatic atmospheric tank can be supplied.

The tank can be protected against freezing by means of an electric heater managed by the electronic controller. A level sensor in the tank serves

to signal low water level conditions. The standard supply includes anti-condensation cladding, a drain valve and an air bleed valve. An internal

bypass between the water delivery and return connections, makes it possible to read the anti-freeze probe if the unit's process water inlet and

outlet connections are inadvertently closed. In this case the unit stops due to tripping of the antifreeze alarm and the shut-off valves must be

reopened.

The bypass serves exclusively to allow an antifreeze alarm to trip (if present) and to allow the pump to run with a reduced water flow rate

without damage. It is advisable to avoid repeated antifreeze alarm trip cycles in the foregoing conditions.

13OPERATING AND MAINTENANCE MANUALChapter 4 - Description


4 . 7 P u m pCentrifugal pumps are installed and it is possible to choose between 2 different types, which provide two different pressures based on

requirements (a 3 or 5-barg pump). It is also possible to have units without pump.

The tandem pump can be installed in certain models.

The management procedure is manual. The selector for pumps rotation is located inside the electrical cabinet.

For more information consult the attached diagrams.

The pump seals are made of ceramics/treated carbon/EPDM.

ATTENTIONBleed the circuit by unscrewing the bleed cap on the pump whenever the water circuit is filled .See 5.4 “Hydraulic connections” .

NOTEThe pump must never run dry.

4 . 8 F a n sAxial fansThe fans of axial type consist of a die-cast aluminium fan with sickle profile.

The protection rating of the fans is IP54.

The protection rating of the fans is IP44 for TAEevo015÷020.

All fans have “F” insulation class to assure the external working with all types of climates. The assembly is completed with a superior (support

to the fan) safety protection grill.

Centrifugal fans (NOT present in models with 460/3/60 supply)Can be installed exclusively on models higher than TAEevo031.

These are double drive fans with the fanwheel coupled directly to the motor shaft and they feature ON/OFF control. The delivery port is located

on the top of the unit.

The delivery direction can be modified on models TAEevo201÷351.

4 . 9 C a s i n gThe base, uprights and panels are made of galvanized carbon steel and held together by screws and/or rivets. All panels undergo a phosphor

degreasing process followed by epoxy polyester powder coating.

The frame is designed to allow easy access to all machine components.

With the prismatic atmospheric tank process water

filling is performed utilising a kit comprising a semi-

transparent plastic container secured to the rear of the

machine. In steady-state operating conditions the

liquid level must be about half way up the container.

Model width depth height

TAEevo 015÷020(mm)(in)

56022

126649.8

81031.9


66026

131151.6

140055.1


76029.9

185873.1

144757


87034.3

224088.2

206581.3

14 OPERATING AND MAINTENANCE MANUALChapter 4 - Description


4 . 1 0 M a t e r i a l s i n c o n t a c t w i t h t h e l i q u i d t o b e c o o l e dThere can be two different groups.

Standard chillers: carbon steel, copper, aluminium, zinc, brass, stainless steel and plastics

in particular:

• evaporator with copper tubes, aluminium fins and shoulders in galvanised steel;

• tank in carbon steel;

Chillers with non-ferrous water circuit: stainless steel (AISI 304), copper, brass and plastics

in particular:

• evaporator with tubes and fins in copper and brass shoulders;

• tank in AISI 304 stainless steel;

alternatively

• external plate evaporator

• prismatic atmospheric tank

The pump mechanical seals are made of ceramics, graphite and/or EPDM.

4 . 1 1 M i n i m u m d i s t a n c e s f r o m w a l l s i n t h e i n s t a l l a t i o n a m b i e n tSee enclosures.

4 . 1 2 E l e c t r i c a l c i r c u i tFor the electrical connections, see Chapter 5 “Installation“, Installation, and consult the enclosed drawings.

4 . 1 3 N e g a t i v e a m b i e n t t e m p e r a t u r e s ( n o t p r e s e n t i n m o d e l s f o r 4 6 0 / 3 / 6 0 p o w e r s u p p l y )

In the presence of sub-zero ambient temperatures (-20) the unit is equipped with a system that assures perfect operation, also in the presence of

harsh temperatures.

The additional elements fitted are:

• electronic fans speed control;

• crankcase heaters

• electrical cabinet heaters

The pump and tank can be equipped with electrical heaters to prevent icing up (instead of using glycol solutions).

15OPERATING AND MAINTENANCE MANUALChapter 5 - Installation


CHAPTER 5

INSTALLATION

ATTENTIONBefore carrying out the installation or operating on this machine, ensure that all the personnel has read and understood the Chapter 2“Safety“ in this manual.

5 . 1 I n s p e c t i o nImmediately after uncrating, inspect the unit.

5 . 2 P o s i t i o n i n g1. The unit may be installed both outdoors and indoors.

2. If installed indoors, the room must be well ventilated and with a sufficient height which allows the air to be expelled by fans. In

some cases it may be necessary to install fans or extractors to limit the temperature of the room.

3. The minimum and maximum working ambient temperature are specified on the unit data plate. In extreme temperature conditions,

the protection devices may trip.

4. The machine must be positioned on any flat surface capable of supporting its weight.

5. Leave at least one metre around the unit to permit access during service operations.

6. Do not obstruct or disturb the condenser's flow of thermal exchanging air.

5 . 3 A n t i f r e e z e p r o t e c t i o nEven if the minimum working ambient temperature is above 0°C it is possible for the machine - during stoppages in the cold seasons - to find

itself in an environment with a temperature below 0°C.

In these cases, if the machine is not emptied, antifreeze (ethylene glycol) must be added in the following percentages to prevent the formation of

ice:

Add the following anti-freeze (ethylene glycol) percentages in order to avoid freezing when operating at low water outlet temperature:

ATTENTIONCarry out the level sensor calibration when the unit is activated the first time. Repeat the operation each time the composition of the processliquid changes.

Ambient temperature up to [°C] (°F)

Ethylene Glycol[% in weight]

0 (32) 0

-5 (23) 15

-10 (14) 25

-15 (5) 30

-20 (-4) 40

Table 6 ADDING ETHYLENE GLYCOL BASED ON THE AMBIENT TEMPERATURE

Water outlet temperature up to [°C] (°F)

Ethylene Glycol[% in weight]

5 (41) 0

0 (32) 19

-5 (23) 27

-10 (14) 34

-15 (5) 39

-20 (-4) 44

Table 7 ADDITION OF ETHYLENE GLYCOL ACCORDING TO THE WATER OUTLET TEMPERATURE

16 OPERATING AND MAINTENANCE MANUALChapter 5 - Installation


5.3.1 Operating l imitsThe operating limits are decided at the time of sale. Refer to the contract data.

(*) With outlet water to a temperature of 15 °C

(**) Not present in models with 460/3/60 supply.

(***) With unit equipped with condensing pressure control.

(****) For temperatures below +5°C (41°F) use antifreeze solutions.

5 . 4 H y d r a u l i c c o n n e c t i o n s

NOTEAll hydraulic connections must be carried out by the customer.

1. Connect the unit to the water piping respecting the water flow direction as indicated in the annexed overall dimension drawings.

2. Provide two cocks (one at the inlet and one at the outlet) for excluding the unit when maintaining without emptying the user water

circuit.

3. Fill the tank with water using:

• A remote discharge system. In this case it is necessary to leak manually the air from the tank by operating on the manual valve.

• If there are frequent air infiltrations into the water circuit it is advisable to install an automatic bleed valve.

4. If the machine is supplied without a pump, make sure that the pump installed by the user has the suction directly connected to the

tank outlet.

NOTEThe pump must never run dry.

ATTENTIONIf the unit is furnished without hydraulic group, it is necessary to install a pump for the evaporation water circuit.For maintenance purposes, we recommend installing a water drainage cock in the lower part of the circuit.

Evaporator water connection size

ATTENTIONFor correct operation, we strongly recommend the installation of a water filter to be connected to the inlet pipe to avoid the entry of solidparticles that could damage the pumps. The non-observance of this instruction can cause big damages to the evaporator.

Minimum Maximum

ambient air temperatureStandard version

°C /°F -5 /23 43 /109.4(*)

ambient air temperature (**)

°C /°F -20/-4(***) 43/109.4(*)

evaporator inlet water temperature

°C /°F -5 /23(****) 35 /95

evaporator outlet water temperature

°C /°F -10 /14(****) 30 /86

TAEevo unit model 015÷020 031÷051 081÷161 201÷351

Evaporator water IN/ OUT connections

Rp 3/4” Rp 1” Rp 1” 1/2 Rp 2”

17OPERATING AND MAINTENANCE MANUALChapter 5 - Installation


5 . 5 E x p a n s i o n t a n kIf the hydraulic circuit is of closed type, it is necessary to install an expansion tank.

The expansion tank must always be connected at pump inlet.

To calculate the minimum volume of the expansion tank required for a given installation, the formula below cab be used and is valid if the

pressure is less than or equal to 0.5 bar when the pump is stopped and the maximum working pressure of the expansion tank is greater than or

equal to 4 bar.

The volume of the expansion tank V in litres is given by the formula:

V = 2 · Vt · (Ptmin - Ptmax)

where:

Example of calculation:Vt=200 litres

percentage of ethylene glycol in volume =30%

tmin =5°C from the table Ptmin=(1.045+1.041)/2 = 1.043

tmax =40°C from the table Ptmax=1.0282

V=2 · 200 · (1.043 - 1.0282)=5.92 litres

Process water inlet Process water outlet

When filling the circuit with liquid check to ensure the absence of air bubbles and

contaminants. If the pump runs noisily or emits anomalous noise it may be necessary to

bleed the liquid circuit in order to prime the pump.

The procedure is as follows:

• unscrew the filler/breather plug at the top of the pump

• fill the hydraulic circuit until water starts to overflow from the filled hole

• refit the plug and tighten it

Repeat the operation if the pump continues to run noisily, in such a way as to eliminate

any air that had previously remained trapped in the impeller vanes.

In the event of double pump, keep particular attention during priming the pump. It is

necessary to verify first the pump positioned on the top.

Vt= total volume of the circuit in litres

Ptmin= specific weight at the minimum temperature obtainable by water over the year in °C (even with the unit stopped)

Ptmax= specific weight at the maximum temperature obtainable by water over the year in °C (even with the unit stopped)

PLUG

18 OPERATING AND MAINTENANCE MANUALChapter 5 - Installation


Table of specific weights P

5 . 6 E l e c t r i c a l c o n n e c t i o n sThe connection of the unit to the power supply network must be done in conformity with the laws and prescriptions in force in the installation

place.

The power supply voltage, the frequency and the phase number must be as shown on the unit data plate.

The power supply voltage must not be, also for short periods, out of the tolerances given in the wiring diagram.

Except for different indications, the frequency tolerance is +/-1% of the nominal value (+/-2% for short periods).

In the event of three-phase supply, the system must be symmetrical (equal effective voltage values and equal phase angles among consecutive

phases).

In particular, except for different indication, the max. unbalance between each phase is 2%. The unbalance is calculated as following:

Vavg= average of voltage phases

In the event of single-phase supply, check that there is a neutral line in the electrical installation and it is earthen in the transformer cabin (TN

system in compliance with IEC 364) or that this is done by the electricity supply company (TT system in compliance with IEC 364).

The phase conductor and the neutral wire must not be confused.

For the electrical supply:

1. connect the unit (PE terminal in the electrical panel) to the earthed system of the building

2. guarantee the automatic interruption of the power supply in the event of insulation failure (protection against indirect contacts in

compliance with IEC 364) by means of a differential device (normally with operation nominal current of 0.03 A)

3. at the beginning of the electrical supply cable must be guaranteed a protection against direct contacts with a protection degree of

IP2X or IPXXB at least

4. at the beginning of the electrical supply cable must be installed protection devices that protect against overcurrents (short circuit)

(see information in the electrical wiring)

5. use conductors which transform the max. current required to the max. operating ambient temperature, according to the selected

installation type (IEC 364-5-523) (see information in the electrical wiring)

6. protection devices must be installed to limit the short circuit current to peaks of 17 kA corresponding to the specified interruption

power if the short circuit current envisaged at the point of installation is greater than an effective value of 10 kA.

Indications of electrical wiring:A max. size permitted for the fuse type gG.

In general, the fuses can be replaced with an automatic switch regulated by means of the unit max. absorbed current (contact the manufacturer if necessary)

B section and type of the power supply cable (if not already supplied):

• installation: insulated conductors, multipolar cable in duct, in air or over masonry (C type in compliance with IEC 364-5-523

1983) or without no other cable in contract

• working temperature: the max. working ambient temperature of the unit

• cable type: copper conductors, PVC insulation from 70°C (if not specified) or EPR insulation from 90°C

Consult the enclosed electrical diagram for additional information.

% Glycol 0% 10% 20% 30% 40%T

empe

ratu

re [°

C]

-20(-4) 1,0036 1,0195 1,0353 1,0511 1,0669

-10(14) 1,0024 1,0177 1,033 1,0483 1,0635

0(32) 1,0008 1,0155 1,0303 1,045 1,0598

10(50) 0,9988 1,013 1,0272 1,0414 1,0556

20(68) 0,9964 1,0101 1,0237 1,0374 1,051

30(86) 0,9936 1,0067 1,0199 1,033 1,0461

40(104) 0,9905 1,003 1,0156 1,0282 1,0408

Table 8 SPECIFIC WEIGHTS

Max difference of each phase from Vavg

Vavgx100

19OPERATING AND MAINTENANCE MANUALChapter 6 - Start up


CHAPTER 6

START UP

ATTENTIONBefore starting up these units be sure that all personnel have read and understood the Chapter 2 “Safety”.

1. Check that the machine's on/off valves are open.

2. Check that the tank is completely full of water and properly vented.

3. Carry out the level sensor calibration as indicated in the 8.5 “Level sensor” paragraph

4. Check that the ambient temperature is within the limits indicated in the machine data plate.

5. It is possible to check that the pressure is about 0.5 bar on the manometer located on the back of the unit (only if the water circuit is

of the closed type).

6.Check that the main switch is in the OFF position (“0”).

7.Check that the power supply voltage is correct.

8.Power the machine by means of the supply line protection device.

9.Turn the machine main switch ON (“I”).

10.Check that the water flows across the evaporator.

11. Press button for 5 seconds if you want to start the unit.

The led flashes for 5 seconds and then it remains lit.

To power-off the machine, press the key.

12. In three-phase units, check that compressor works correctly (it must not be noisy or overheated) and check that the fans and the

pump (if installed) rotation direction is correct.

If necessary invert two phases of supply.

13. Check that the pressure difference between the value read on the manometer located on the machine control panel with the pump in

motion and the value read with the pump stopped is higher than the available pressure with the pump's maximum flow capacity. If

this difference is lower, it means that the water flow capacity is higher than the maximum value allowed. In order not to damage the

pump, it is necessary to increase the pressure drop of the hydraulic circuit by, for example, partially closing a pump discharge cock.

14. Models with centrifugal fans:

Check that the output of the centrifugal fans is correctly ducted and that the pressure drop of the ducting system is about equal to the

available head. If the pressure drops are:

- greater this means that there is a reduction in the flow of cooling air with a consequent drop in machine performance and the

possibility of protection devices tripping even at relatively low ambient temperatures;

- lower this means that the air flow may be too high for the fan and this could be dangerous for the centrifugal fan motor.

15. If with the first start-up, there is a high ambient temperature and the temperature of the water in the hydraulic circuit is much higher

than the working value (e.g. 25-30°C) this means that the chiller starts up overloaded with the consequence of possible tripping of

the protection devices. To reduce this overload, a chiller outlet valve can be gradually (but not totally!) closed to reduce the flow of

water passing through it. Open the valve as the water temperature in the hydraulic circuit reaches the working value.

16. The machine is now ready for operating.

If the thermal load is lower than that produced by the unit, the water temperature drops until it reaches the set point (ST01

parameter) set following the instruction of chapter Electronic Board.

When SET-POINT value has been reached, the electronic control controlling the water inlet temperature stops the compressor. The

water pump, on the other hand, is always in motion.

20 OPERATING AND MAINTENANCE MANUALChapter 7 - Electronic Board


CHAPTER 7

ELECTRONIC BOARD7 . 1 D i s p l a y

The display is divided in 3 zones.

7.1.1 Display icons

7 . 2 F u n c t i o n o f b u t t o n s

Top-left zone

It displays the temperature of temperature regulation probe.

NOTEThe displaying depends on the setting of parameter CF36 (see chapter7.9 “Values displayed”).

Bottom-left zone

It displays the operating setpoint, OFF with stand-by unit.

NOTEThe displaying depends on the setting of parameter CF42 (see chapter7.9 “Values displayed”).

Right zone

Signalling icons.

ICON MEANING ICON MEANING

Celsius degrees (If displayed) Low pressure alarm

Fahrenheit degrees (If not displayed) Antifreeze resistance

Bar/Psi Pump on

Compressor 1 Flow meter alarm

Compressor 2 Time to defrost starting

Stand-by unit Fans on

General alarm Indication for Function Menu entering

High pressure alarm

BUTTON FUNCTIONIt selects water temperature and ambient air temperatures in the top part of the display.

During programming phase it scrolls the parameter’s codes or increases their values.

If pressed for 5 seconds, it allows to switch on or off the unit in chiller modality.

It selects water temperature in the top part of the display. During programming phase it

scrolls the parameter’s codes or decreases their values.

If pressed for 5 seconds, it allows to display or modify the set point.During programming phase it selects a parameter of confirms a value.

It allows to enter Function Menu.

21OPERATING AND MAINTENANCE MANUALChapter 7 - Electronic Board


7.2.1 Function of combined buttons

7 . 3 S y m b o l s a n d l e d s o n t h e d i s p l a y

7 . 4 R e m o t e t e r m i n a l

7.4.1 Function of buttons

If there is no communication between the unit and the remote terminal, in the top part of the

display it appears the message “ ” (no link).

NOTEThe displaying depends on the setting of parameter CF43-CF44 (see chapter 7.9 “Values displayed”).

7 . 5 D i s p l a y i n g d u r i n g a n a l a r m

BUTTONS FUNCTION

+ To enter programming phase (pressed for 5 sec).

+ To exit programming phase.

+ If pressed for more than 5 seconds they allow to start a manual defrosting cycle (function not present).

LED LED STATUS MEANING LED LED STATUS MEANING

Not enabled Not enabled

Steady Unit on in chiller modality Not enabled

FlashingProgramming phase (if flashes

together with led)Clock adjustment

Not enabled

BUTTON FUNCTIONIt allows to enter Function Menu.

If pressed for 5 sec., it allows to display or modify the set point.During programming phase it selects a parameter or confirms a value.

It selects water temperature in the top part of the display.During programming phase it scrolls the parameter’s codes or increases their values.

It selects water temperature in the top part of the display.During programming phase it scrolls the parameter’s codes or decreases their

values.

If pressed for 5 seconds it allows to switch on or off the unit.

Not enabled

During normal operation (no alarm), when an alarm occurs the alarm

code and the appropriate icon flash in the bottom part of the display,

alternated to the temperature / pressure.



7.5.1 Alarm iconsThere are four icons for alarm signalling:

7 . 6 H o w t o s i l e n c e t h e b u z z e rAutomatic silencing: it happens when the cause of the alarm has been eliminated.

Manual silencing: press and release one of the four buttons; the buzzer silences even if the alarm condition persists.

7 . 7 F i r s t s t a r t u pAt the first start up of the unit in the bottom part of the display it could appear the message “ ” alternated with the temperature. It indicates

that it is necessary to regulate the clock.

If the probes used to control the unit are not connected or are damaged, the appropriate alarm will be displayed.

However, it is possible to regulate the clock or to programme the unit.

7 . 8 P r o g r a m m i n g b y k e y b o a r dThe parameters of electronic control are divided in two groups and in two levels:

1. USER (Pr1);

2. SERVICE (Pr2).

USER level allows to access user parameters, SERVICE level allows to access the parameters of unit configuration (it is protected by a

password).

The parameter’s groups, indicated by some “Label”, are divided as follows:

7.8.1 Access to “Pr1” parameters (User level)To enter the menu of “Pr1” parameters which can be access by the user:

1. Press for some seconds + buttons ( and start flashing), in the top of the display appears “ALL”, the first group of

parameters.

2. Select the various groups using and buttons.

3. After selecting a group, press button: if the selected group is part of the selected menu or any parameter of this group has been

moved in this menu, in the bottom of the display it appears the “Label” and the code of the group’s first parameter present in “Pr1”,

its value appears in the top of the display.

It will not be possible to enter a parameter’s group which is not part of this menu.

4. It is possible to scroll or modify the parameters contained in the group.

7.8.2 How to modify a parameter’s value1. Enter the programming procedure.

2. Select the desired parameter.

3. Press button to enable the value’s adjustment.

4. Modify the value by means of and buttons.

5. Press to store the new value and to pass to the code of the following parameter.

6. To exit the procedure: Press + when a parameter is displayed, or wait (about 240 seconds) without pressing any button.

General alarm

High pressure alarm

Low pressure alarm

Flow meter alarm

LABEL ACTIONALL It displays all parameters

ST It displays Thermoregulation parameters

CF It displays Configuration parameters

Sd It displays only the parameters of the Dynamic Setpoint (NOT ENABLED FUNCTION)

ES It displays only the parameters of the Energy Saving (NOT ENABLED FUNCTION)

CO It displays Compressor parameters

FA It displays Fan parameters

Ar It displays only the parameters of the Antifreeze Resistance

dF It displays only the parameters of the Defrosting (NOT ENABLED FUNCTION)

AL It displays only the Alarm parameters

LS It displays only the LASER parameters (NOT ENABLED FUNCTION)



NOTEThe new value is stored also when the programming procedure is terminated for “time out”, without pressing button.

ATTENTIONYou can modify the parameter of the CF (configuration parameters) family only when the unit is in stand by.

7 . 9 V a l u e s d i s p l a y e dThe values visualized on the display change according to the configuration of parameters CF36 for the top part and CF42 for the bottom part.

For remote terminal it changes according to the configuration of parameters CF43 for the top part and CF44 for the bottom part.

Parameter CF36/CF43 = 0In the top part of the display it appears the probe BEWOTParameter CF36/CF43 = 1In the top part of the display it appears the probe BTWOT

Parameter CF36/CF43 = 2No value will appear in the top part of the display

Parameter CF36/CF43 = 3In the top part of the display it appears the probe BAT1Parameter CF36/CF43 = 4In the top part of the display it appears the chiller set; off when unit in stand-by

Parameter CF36/CF43 = 5In the top part of the display it appears “OnC” when the unit is operating; off when unit in stand-by

Parameter CF36/CF43 = 6In the top part of the display it appears the LASER set (FUNCTION NOT ENABLED)

Parameter CF36/CF43 = 7No value will appear in the top part of the display

Parameter CF36/CF43 = 8In the top part of the display it appears the operating differential

Parameter CF42/CF44 = 0In the bottom part of the display it appears the probe BEWOTParameter CF42/CF44 = 1In the bottom part of the display it appears the probe BTWOT

Parameter CF42/CF44 = 2In the bottom part of the display it appears the probe PCP1Parameter CF42/CF44 = 3In the bottom part of the display it appears the probe BAT1Parameter CF42/CF44 = 4In the bottom part of the display it appears the chiller set; off when unit in stand-by

Parameter CF42/CF44 = 5In the bottom part of the display it appears “OnC” when the unit is operating

Parameter CF42/CF44 = 6In the bottom part of the display it appears the LASER set (FUNCTION NOT ENABLED)

Parameter CF42/CF44 = 7No value will appear in the bottom part of the display

Parameter CF42/CF44 = 8In the bottom part of the display it appears the operating differential

If the probe BTWOT has been selected has default, every time you press for 30 sec the top display visualizes the BEWOT probe, in the

bottom part of the display it will appear the “Label” Pb2 than the default value will return to be displayed.

If the probe BEWOT has been selected has default, every time you press for 30 sec the top display visualizes the BTWOT probe, in the

bottom part of the display it will appear the “Label” Pb1 than the default value will return to be displayed.

7 . 1 0 U n i t s w i t c h i n g o n / o f fThe pressure of button for 5 seconds allows to switch on or off the unit.

The led of icon flashes for 5 seconds then it remains lit.

7 . 1 1 H o w t o p u t t h e u n i t i n s t a n d - b yStand-by modality is obtained every time the unit is switched off.

It is indicated by the symbol lit.

Also in stand-by modality the controller can:

1. Display the measured values

2. Manage the alarms by displaying and signalling.



7 . 1 2 F u n c t i o n m e n u ( b u t t o n )The access to Function Menu allows to:

1. Display and reset the alarms (see 7.12.3 “How to display the alarms “ALrM””).

Reset the alarms (see “How to reset an alarm “rSt””).

2. Display the alarm history (see 7.12.5 “How to display the alarm historic “ALoG””).

3. Upload the parameters from the unit to the key.

4. Display the operating hours of the controlled loads.

Reset the operating hours of the controlled loads.

7.12.1 Access to Function menuPress and release button (menu).

The icon “ ” will appear.

7.12.2 Exit Function menuPress and release button or wait for time out (30 seconds).

The icon “ ” disappears.

7.12.3 How to display the alarms “ALrM”1. Press to enter Function menu.

2. Press or to select “ALrM” function.

3. Press and release button.

4. Press or to scroll all alarms.

5. To exit press or wait for time out (30 seconds).

7.12.4 How to reset an alarm “rSt”1. Press to enter Function menu.

2. Select “ALrM” function

3. Press , in the bottom of the display it appears the alarm code.

4. If the alarm can be reset in the top of the display it appears the Label “rSt”, it the alarm can not be reset it appears the Label “NO”.

5. Use or button to scroll all the alarms.

6. When the Label “rSt” is displayed, press to reset the alarm and go to the following one.

7. To exit press button or wait for time out (30 seconds).

7.12.5 How to display the alarm historic “ALoG”1. Press button to enter Function menu.

2. Use or button to select the function “ALoG”.

3. Press until the Label with the alarm code will appear in the bottom of the display, and the Label “n°” with a progressive number

will appear in the top of the display.

4. Using or button scroll all the alarms.

5. To exit “ALoG” function and to return to normal displaying, press button or wait for time out (30 seconds).

The memory contains until 50 alarms, a further alarm will cancel from the memory the oldest one (the displaying is in increasing order, from the

oldest one to the most recent one).

7.12.6 How to reset the alarm history “ArSt”1. Enter Function menu.

2. Select “ALoG” function in the bottom of the display.

3. Press button.

4. Inside “ALoG” function, using or button, select the function “ArSt” in the bottom of the display and “PAS” in the top of

the display.

5. Press : the password is required. In the bottom of the display it appears “PAS”, “0” flashes in the top of the display.

6. Insert the password for resetting.

7. If the password is correct the Label “ArSt” flashes for 5 seconds to confirm the resetting.

After resetting the unit returns to normal displaying.



7.12.7 Displaying the operating hours of loads “C1Hr - C2Hr - PFHr”1. Press button to enter Function menu.

2. Press or button until the Label of a single load appears in the bottom of the display: C1Hr (operating hours of compressor

1), C2Hr (operating hours of compressor 2), PFHr (operating hours of water pump and of outlet fan).

The operating hours will appear in the top of the display.

3. The icon will be lit.

7.12.7.4 Reset of the load operating hours

1. Press button to enter Function menu.

2. Press or button until the Label of a single load appears in the bottom of the display (C1Hr, C2Hr only 201÷351 units,

PFHr) and the operating hours appear in the top of the display.

3. Press button for 3 seconds: in the top of the display it will appear “0”. It indicates that the reset has happened.

4. To exit Function menu, press button or wait for time out (15 seconds).

5. For the other loads repeat the operations from point 2. to point 4.

7 . 1 3 O t h e r f u n c t i o n s b y k e y b o a r d

7.13.1 How to display the Set PointPress and release button.

In the bottom part of the display it appears SetC (chiller set).

7.13.2 How to modify the Set Point1. Press button for 5 seconds at least.

2. The set point will flash.

3. Use or button to modify the set point value.

4. To store the new set point value press button or wait for time out to exit programming procedure.

7 . 1 4 C o m p r e s s o r s u n l o a d i n g f u n c t i o nThis procedure is necessary when sudden peaks in cooling demand occur, for instance if the machine is restarted after a long period of inactivity.

Under these conditions the evaporator inlet water temperature might be so high as to require a cooling delivery in excess of system capacity.

The consequent system overload would require the start-up of all the compressors at once, which would be forced to operate in near-limit

conditions.

The overburdened compressors would thus be subject to dangerous overheating which would cause the activation of the thermal protections, or

the pressure of the refrigerant gas could reach alarm levels which would cause the machine to shut down.

This function enables the machine to run (through the switch-off or capacity step operation of the compressors) even when the temperature of the

water at the evaporator’s inlet is high (summer start-up with hot water accumulation), preventing the possible triggering of high pressure alarms.

It is not present in one compressor units.

The following messages will flash on the display:

AEUn= evaporator unloading function

ACUn= condensation unloading function

7 . 1 5 P r o b e k e yIn this chapter are indicated the probes BEWOT, BTWOT, BCP1 and BAT1, for their positioning consult the refrigerant drawing.

Their description is indicated in the following table:

Name in the manual Borne name Description-BEWOT PB1 EVAPORATOR WATER OUTLET TEMPERATURE PROBE

-BTWOT PB2 TANK WATER OUTLET TEMPERATURE PROBE

-BCP1 PB3 CONDENSING PRESSURE TRANSDUCER (only with electronic regulation)

-BAT1 PB4 AMBIENT AIR TEMPERATURE PROBE (Only with antifreeze protection function)

26 OPERATING AND MAINTENANCE MANUALChapter 8 - Other components setting


CHAPTER 8

OTHER COMPONENTS SETTING8 . 1 C o m p r e s s o r i n t e g r a l p r o t e c t i o n ( P I )

For each compressor, this protection consists of three or six thermistor probes, each inserted in the winding of a motor phase; they are connected

in series and, depending on the model, the terminals can be external. This system ensures complete protection against most of the problems

which can give rise to burning of the windings. When it trips, it is necessary to find and eliminate the cause; then you can start the machine again

by pressing ON-OFF button.

8 . 2 R e f r i g e r a n t h i g h a n d l o w p r e s s u r e s w i t c h e sThe units are fitted with the following pressure switches:

1. low pressure switch (LP)This monitors refrigerant compressor suction pressure and will trip to avoid that values dangerous for compressor normal operation

are reached. It is of an “automatic reset” type. The alarm A02 (see chapter "12.1 Alarm codes and actions"), produced by this

pressure switch tripping, can have a delay time after the compressor starting to avoid simple intake pressure fluctuations or false

alarms interfere with the unit normal operation. After the time set, the pressure switch tripping will be detected by the electronic

board which will display the alarm signal A02 (see chapter "12.1 Alarm codes and actions") band will stop the compressor/s while

the pump (if it is installed) will continue to operate. After the alarm tripping, if the compressor intake pressure increases and exceeds

the pressure switch tripping value it will restart. It will be possible to start up the unit again following the alarm reset procedure

described in Chapter 7 “Electronic Board”. If the cause of the pressure switch tripping has not removed this cycle will repeat

continuously.

2. high pressure switch (HP)This monitors the refrigerant compressor discharge pressure and prevents it increases to levels dangerous for compressor working

and for people safety. It is of an “automatic reset” type. Its tripping is detected by the electronic board which will open the

compressor power supply circuit and will display the alarm signal A01 (see chapter "12.1 Alarm codes and actions").

When the compressor outlet pressure drops below the reset point it is reset.

It will be possible to start up the unit again following the alarm reset procedure described in Chapter 7 “Electronic Board”.

If the cause of the pressure switch tripping has not removed this cycle will repeat continuously.

The pressure switches LP and HP are screwed to the refrigerant circuit piping with SCHRAEDER valves (with needle) which prevent leakage

during replacement.

The TRIP and RESET values of the pressure switches depend upon the refrigerant gas used and are listed in the table below:

8 . 3 C o m p r e s s o r o p e r a t i o nThe thermoregulation used is of proportional type. After fixing the temperature and differential values, the compressor will start when the value

measured will exceed the sum of temperature + differential. It will stop when the value will be lower than the temperature - differential. The

same logic will be applied also in two compressor units.

8.3.1 Compressor regulation graphic in Chil ler mode

Pressure switch RefrigerantTRIP RESET

bar PSI °C °F bar PSI °C °FHP

R407C27.2 394.5 63.4 146.1 20.5 297.3 51.5 124.7

LP 1.7 24.6 -17.3 0.9 2.7 39.1 -8.8 16.2

With 1 compressor With 2 compressors

ST09 = 2

27OPERATING AND MAINTENANCE MANUALChapter 8 - Other components setting


8 . 4 F a n s p e e d r e g u l a t i o nThe fan speed regulation can be carried out by means of a pressure switch (FP) in ON/OFF modality or by means of a pressure transducer (speed

regulator).

1. Fan pressure switch (FP)In these units a pressure switch detects the refrigerant compressor outlet pressure and controls the fan operation powering them on or

off.

The pressure switch FP is screwed to the refrigerant circuit piping with SCHRAEDER valves (with needle) which prevent leakage

during replacement.

The TRIP and RESET values of the pressure switch depend upon the refrigerant gas used and are listed in the table below:

Axial fans

Centrifugal fans (NOT present in models with 460/3/60 supply)

2. Speed regulator (NOT present in models with 460/3/60 Hz supply, with centrifugal fans and in TAEevo 015÷020)The unit is furnished with a speed regulator of fan rotation, which operates to maintain the condensing pressure within a pre-fixed

value.

These units are furnished with a pressure transducer positioned on the refrigerant compressor outlet pipeline. It commutates the

measured pressure value into an electric signal, sent to the speed regulator. For example, if the temperature of the air sent to the

condenser decreases, the pressure transducer will measure a decreasing of the condensing pressure. This pressure decreasing is sent

to the speed regulator which will reduce the fan speed and consequently, the condenser air flow will be reduced. Analogously, when

the air temperature to the condenser and the condensing pressure increase, the regulator will increase continuously the fan speed to

increase the air flow through the condenser.

The following graphic shows the progress of the fan rotation speed according to the condensing pressure changings.


bar PSI °C °F bar PSI °C °FAxial fansFP R407C 18 261 46.4 115.5 14 203 37.0 98.6


bar PSI °C °F bar PSI °C °FCentrifugal fansTAEevo 031÷051

FPR407C 18 261 46.4 115.5 14 203 37.0 98.6

Centrifugal fansTAEevo 081÷351

FP1R407C 16.3 236.4 42.6 108.7 12.5 181.2 32.9 91.2

Centrifugal fansTAEevo 081÷351

FP2R407C 18 261 46.4 115.5 14 203.0 37.0 98.6

TAEevo 051÷161 TAEevo 201÷351

FP1FP2

ELECTRICALBOARDSIDE

ELECTRICALBOARDSIDE

FP1

FP2

% of rotation speed

condensingpressure [bar g]

0%

Vmax

Vmin

P min P max

28 OPERATING AND MAINTENANCE MANUALChapter 8 - Other components setting


8 . 5 L e v e l s e n s o rAll units are equipped with a level sensor.

The sensor is installed inside the tank to detect any water losses. If water losses are detected, the sensor sends an alarm signal to the control board, triggering an

immediate shutdown of the unit.

ATTENTION- Take all possible precautions to avoid accidental contact with live components.- The voltage inside the electrical panel may reach potentially fatal levels.

ATTENTIONMTA sets the level sensor to operate with sensitivity of 250kOhm (setting A=5, B=H on “Empty” side).The level sensor is set by the producer and its calibration must not be modified.

ATTENTIONAn anti-tamper label is applied over the setting trimmers (A and B).Total or partial damage to this label will result in forfeiture of warranty rights.

The Orange LED lights up with water present (during normal operation) and goes out in the event of water losses.

Power up the system; the green LED will illuminate steadily.

A Sensitivity setting

B Sensitivity setting range

B A

Turn the trimmer B to change the sensitivity range of the regulator A

L 250 Ω ÷ 5 KΩ

S 5 KΩ ÷ 100 KΩ

H 50 KΩ÷ 500 KΩ

Con

duct

ive

Leve

l Con

trol

ler

Dua

l Fun

ctio

n

Sensitivity

123

10

4 5 6

87

9

Fill EmptyL

S

H

L

S

H

11 12 14A1Y2

A2 24 2122Y1Y3

29OPERATING AND MAINTENANCE MANUALChapter 9 - Operation and maintenance


CHAPTER 9

OPERATION AND MAINTENANCE9 . 1 O p e r a t i o n

The machine operates in completely automatic mode.

There is not necessary to turn it off when there is no thermal load as it turns off automatically when the preset water outlet temperature has been

reached.

9 . 2 M a i n t e n a n c e

ATTENTIONBefore proceeding with the installation or the maintenance of these units be sure that all personnel concerned have read and understood theChapter 2 “Safety“.

9 . 3 U n i t a c c e s s

ATTENTIONEverytime the panels must be removed the unit must be switched off and disconnected from power supply.

To access the components of the refrigerant circuit use an appropriate key furnished with the unit and operate on the closing bolts of the front

panel (A).

The access to the evaporator and to the components of the hydraulic circuit can be carried out by unscrewing, by a screwdriver, the screws fixing

the panel (B).

To access the components of the electrical circuit remove the front panel (C).

For models TAEevo201 and upperTo access the components of the refrigerant circuit operate on the closing bolts of the panel (A). Furthermore, it is possible to access the

components of the refrigerant circuit removing the side panels (B-D). The access to the evaporator and to the components of the hydraulic circuit

can be carried out removing the back panel (F) or the side panels (D), (E), (G) or (H).

TAEevo 015÷020

TAEevo 031÷161 TAEevo 201÷351 TAEevo 201÷351

CA

B

CA

B D

B

CF

DE

AF

H

G

30 OPERATING AND MAINTENANCE MANUALChapter 9 - Operation and maintenance


9 . 4 E m p t y i n g t h e p r o c e s s w a t e r c i r c u i tUse the cock installed on the unit lower side if the storage tank need to be emptied for maintenance purposes (in models fitted with a hydraulic

unit).

ATTENTIONThe water circuit must be emptied when a unit that has no heating elements or anti-freeze liquid is to be left inactive for a certain period oftime in an environment where the temperature may fall low enough to freeze the water in the evaporator (with the risk of breaking theevaporator).

9 . 5 M a i n t e n a n c e s c h e d u l e

ATTENTION- This plan is based on an average working situation.- In some installations it may be necessary to increase the frequency of maintenance.

OPERATION

1 da

y

1 m

onth

6 m

onth

s

1 ye

ar

Check for any alarm signals. x

Check that the water outlet temperature is within the envisaged range. x

Check that the water inlet temperature is in accordance with the value used for selecting the unit. x

In units with hydraulic group, check that the pressure in the tank (with pump stopped, if present) is at least 0.5 bar with the circuit closed. x

In units with hydraulic group, check that the difference between the discharge and the suction pressure of the pump (measured on the manometer with the pump stopped) is within expected limits and, in particular, that it is not lower than the value corresponding to the maximum flow capacity.

x

Clean the water filter.We recommend to clean the filter after a week from the unit starting. x

Check that the liquid indicator (if present) is full or with a small stream of bubbles when the compressor is running. x

Check that the unit current absorption is within the values on the data plate. x

Carry out visual inspection of refrigerant circuit, looking out for any deterioration of the piping or any traces of oil which might indicate a refrigerant leak. x

Check the condition and security of piping connections. x

Check the condition and security of electrical connections. x

Using a spanner, check that the connections between the compressor inlet and outlet piping have not slackened. x

Check that the ambient air temperature is within the unit capacities.Check that the environment is well ventilated. x

Check that fan is automatically switched on.Thoroughly clean the fins of the condenser with soft brush and/or jet of clean compressed air.Check that the grilles of the unit are free from dirt and any other obstructions.

x

Clean condenser fins with a mild detergent. x

31OPERATING AND MAINTENANCE MANUALChapter 10 - Trouble shooting


CHAPTER 10

TROUBLE SHOOTING

PROBLEM CAUSE SYMPTOM REMEDYA

Tank water outlet temperature BTWOT higher than the expected value.

A1Thermal load too high.

A1.1Temperature BTWOT greater than expected value.

Restore the thermal load to within the preset limits.

A2Ambient temperature too high.

A2.1See A1.1

In the event of installation in a closed place, if it is possible, increase the change air flow into the installation location, to restore the ambient temperature to within the preset limits.

A3Condenser fins are dirty.

A3.1See A1.1

Clean the condenser fins.

A4Front surface of the condenser obstructed.

A4.1See A1.1

Free the front surface of the condenser.

A5Lack of refrigerant in the unit.

A5.1• See A1.1;• evaporating pressure too

low;• a lot of bubbles in the liquid

indicator.

Get a technician to check for leaks and eliminate them.Fill the unit.

A6Compressor protection trips.

A6.1• The head and the body of

the compressor are very hot;

• the compressor stops and try to start up again after few seconds.

Get a technician to check for leaks and eliminate them.Fill the unit.

BLow pressure drop (water pressure) at pump outlet.

B1Water flow too high. Wrong working of the pump (high flow, low discharge head, high absorption).

B1.1• Possible increase in the

outlet temperature BTWOT (see A1.1);

• with pump installed on the machine: pressure difference, read on the machine pressure gauge, too low with pump stopped and pump running;

• possible tripping of pump thermal protection.

Reduce water flow to within the preset limits, for example by closing partially a pump outlet cock.Reset the pump thermal protection and check the electrical absorption.

B2See point C.

B2.1See point C.

See point C.

B3Evaporator obstructed because of dirt transported by the utilization water.

B3.1High water temperature difference between input and outlet.

Depending on the type of dirt:• clean the evaporator by

running a detergent solution which is not aggressive for steel, aluminium and copper;

• run a high water flow against the stream.

Install a filter upstream from the unit.

CWater differential pressure switch FLOW alarm trips.

Alarm displayed:A08

C1The filter upstream from the unit is obstructed, if installed.

C1.1• Water does not flow.

Pressure difference between inlet and outlet lower than 25mbar.

• Alarm displayed: A08.• main alarm relay tripped.

Clean the upstream filter, if installed.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

C2The pump is defective or rotate in the wrong direction. (three-phases supply).

C2.1• See C1.1;• main alarm relay tripped.

Check the pump electrical supply and, if it is necessary, invert the two phases. Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

C3Water inlet-outlet inverted (units without hydraulic kit).

C3.1• See C1.1;• main alarm relay tripped.

Invert the water inlet-outlet.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

32 OPERATING AND MAINTENANCE MANUALChapter 10 - Trouble shooting


DHigh pressure switch tripped (HP)

Alarm displayed:A01

D1The fan doesn’t work.

D1.1• Refrigerant compressor

stops;• the indication A01 appears

on the display alternated to BTWOT value;

• main alarm relay tripped;

• the led of icon lights up.

Repair or replace the fan.Verify the eventual heat protection of the fan/s.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).Check the fan speed regulation system.

D2Ambient air temperature too high.

D2.1• Air ambient temperature

higher than maximum permitted value;

• see D1.1

In the event of installation in a closed place, reduce the ambient temperature to within design limits, for example by increasing local ventilation.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

D3Recirculation of warm air due to incorrect installation location.

D3.1• Condenser thermal

exchanging air temperature higher than the permitted value;

• see D1.1

Change the position of the unit or the position of any adjacent obstructions to avoid recirculation.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

D4See A3

D4.1See D1.1

Clean the condenser fins.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

D5See A4

D5.1See D1.1

Clean the front surface of the condenser.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

D6Thermal load too high.

D6.1• Water outlet temperature

too high;• refrigerant compressor

stops;• main alarm relay tripped.

If possible, reduce the thermal load to within the design limits.Follow the alarm reset procedure to star up the unit again (chapter Electronic Board).

ELow pressure switch tripped (LP)

Alarm displayed:A02

E1Lack of refrigerant (see also A5).

E1.1• Refrigerant compressor

stops;• the indication A02 appears


• main alarm relay tripped.

• the led of icon lights up.

Call a qualified refrigeration engineer to check for leaks and replenish refrigerant charge.

E2The filter upstream from the unit is dirty, if installed.

E2.1See E1.1.

Clean or replace the water inlet filter, if installed.

FCompressor protection trips

Alarm displayed:A09 or A10

F1Thermal load too high combined with a shortage of refrigerant (also see A5).

F1.1• The head and the body of

the compressor are very hot;

• the compressor stops and tries to restart after a short period (even a few seconds);

• compressor thermal protection trips;

• the indication A09 or A10 appears on the display;

• the led of general alarm

icon lights up.

Call a qualified refrigeration engineer to check for leaks and replenish refrigerant charge.

F2The rotation direction of scroll compressor is wrong (only three-phase units).

F2.1The refrigerant fluid is not compressed and the unit doesn’t cool.

Invert two phases of the power supply.

PROBLEM CAUSE SYMPTOM REMEDY

33OPERATING AND MAINTENANCE MANUALChapter 10 - Trouble shooting


GDigital display and all LEDs off although P1 main switch On (“I”).

G1Auxiliary circuit fuse tripping.

G1.1Measuring with a tester the voltage at the transformer secondary winding connector, there will be not tension survey.

Check the causes of the fuse tripping.Replace the fuse.

G2Abnormal power consumption by one or more of the control board components.

G2.1Despite presence of power at the connectors of the control board, the display and all LEDs remain unlit.

Try to turn the unit OFF and ON again.If this doesn't solve the problem, contact the nearest service centre

HAlarm displayed:P1, P2, P3, P4

H1Probe BEWOT, BTWOT, BAT1 damaged.

H1.1• See problem;• main alarm relay tripped.

Check that the temperature probe is correctly connected to the control board terminals and that the cable is undamaged. If necessary replace the probe.

IAlarm displayed:A04

I1Low water outlet temperature.The value fixed by the parameter is lower than the one measured by the probe.

I1.1• See problem;• the compressor stops and

restarts;• main alarm relay tripped.• the led of general alarm

icon lights up.

Identify and remove the cause which provoked BTWOT temperature decreasing to a value lower than Ar03.

I2Too low water flow.

I2.1• See problem;• the compressor stops and

restarts;• main alarm relay tripped.

Increase the water flow.

JAlarm displayed:A08pump thermal protection.

J1The pump's thermal protection device has tripped because the water flow is too high.

J1.1• See problem;• main alarm relay tripped;• the refrigerant compressor

and pump stop; • the indication A08 appears


• the pressure difference read on the machine gauge with the pump stopped and pump running is lower than the available head with maximum pump flow.

Reset the thermal protection device.Increase the pressure drop in the hydraulic circuit, for example by partially closing the pump output valve.

J2The grille through which the pump cooling air passes is obstructed.


and pump stop.

Reset the thermal protection device.Free the grille.

J3The pump is defective.


and pump stop;• the current absorbed by

the pump is greater than the nominal rating;

• the pump may be noisy.

Reset the thermal protection device.Replace the pump.

KAlarmACF1,ACF2,ACF3,ACF4,ACF5

K1Configuration error.

K1.1ACFx flashes on the display and unit blocked.

Turn off and turn on the unit. If this does not solve the problem, contact the nearest service centre.

LAlarmEE

L1The processor does not memorize the data in the right way

L1.1• The machine does not

work;• EE flashes on the display;• the led of general alarm

icon lights up.

Turn off and turn on the unit. If this does not solve the problem, contact the nearest service centre.

PROBLEM CAUSE SYMPTOM REMEDY

34 OPERATING AND MAINTENANCE MANUALChapter 11 - Setting tables


CHAPTER 11

SETTING TABLESThe following tables show the list of all masks which contain adjustable parameters.

On Factory setting column are indicated the setting values set during the unit testing; they are referred only to the unit which has the same serial

number you can find on the label of the first page of this manual.

DANGERThe wrong programming of the electronic control could cause big damages to the unit.The parameters can be modified by specialized personnel only.

1 1 . 1 P a r a m e t e r s e t t i n gTo modify the following parameters, follow the procedure illustrated in Chapter 7 “Access to “Pr1” parameters (User level)“ and Chapter 7 “How to modify a parameter’s value“.

11.1.1 Thermoregulation parameters

11.1.2 Configuration parameters

Parameter Level Description Min. Max. Udm Resolution Factory settingST01 U Summer set point ST05 ST06 °C

°F°C°F

DecInt

9°C with 1 compr.48°F with 1compr.8°C with 2 compr.47°F with 2compr.

ST02 U Summer differential 00.000.0

25.045.0

°C°F°C°F

DecInt

4°C with 1 compr.7°F with 1 compr.2°C with 2 compr.4°F with 2 compr.

ST05 U Summer min. set -40.0-40.0

ST01 °C°F

DecInt

5.0°C41°F

Pr2 Password 0 999 - -

Parameter Level Description Min. Max. Udm Resolution Factory setting

CF34 U Serial address 1 247 1

CF36 U Default top displaying:• 0 = BEWIT.

• 1 = BEWOT.

• 2 = none.

• 3 = BAT1.

• 4 = unit setpoint

• 5 = unit status (**)

• 6 = Laser set

• 7 = none

• 8 = operating differential

0 8 1

CF42 U Default bottom displaying:• 0 = BEWOT.

• 1 = BTWOT.

• 2 = BCP1• 3 = BAT1.



• 6 = Laser set

• 7 = none


0 8 4

CF43 U Default top displaying of remote terminal:• 0 = BEWOT.

• 1 = BTWOT.

• 2 = BCP1• 3 = BAT1.



• 6 = Laser set

• 7 = none


0 8 1

35OPERATING AND MAINTENANCE MANUALChapter 11 - Setting tables


11.1.3 Dymanic set point parameters (NBCP1OT ENABLED FUNCTION)

11.1.4 Energy Saving parameters (NOT ENABLED FUNCTION)

11.1.5 Compressor parameters

11.1.6 Fan parameters

11.1.7 Antifreeze support resistance parameters

11.1.8 Defrost parameters (NOT ENABLED FUNCTION)

11.1.9 Alarm parameters

11.1.10 LASER parameters (NOT ENABLED FUNCTION)

CF44 U Default bottom displaying of remote terminal:• 0 = BEWOT.

• 1 = BTWOT.

• 2 = none.

• 3 = BAT1.



• 6 = Laser set

• 7 = none


0 6 4

Pr2 Password 0 999 -

Parameter Level Description Min. Max. Udm Resolution Factory settingPr2 Password 0 999 -


Parameter Level Description Min. Max. Udm Resolution Factory settingEVAPORATOR UNLOADINGCONDENSER UNLOADING


Parameter Level Description Min. Max. Udm Resolution Factory settingHOT START



Ar03 U Antifreeze alarm set Ar01 Ar02 °C°F

DecInt

3°C38°F

BOILER FUNCTION (NOT ENABLED)






36 OPERATING AND MAINTENANCE MANUALChapter 12 - alarms


CHAPTER 12

ALARMS1 2 . 1 A l a r m c o d e s a n d a c t i o n s

See chapter 7.12.3 “How to display the alarms “ALrM”” and 7.12.4 “How to reset an alarm “rSt”” .

CODE MEANING CAUSE ACTION RESETP1 Alarm of BEWOT

probe

Probe damaged or

resistive value out of

range

“open collector” outlet / alarm relay is

activated

The buzzer is activated

The icon for general alarm flashes

The alarm code is displayed

Automatic

If the resistive value returns within the

envisaged range.

P2 Alarm of BTWOT

probe

Probe damaged or


range


activated




Automatic


envisaged range.

P4 Alarm of BAT1

probe

Probe damaged or


range


activated




Automatic


envisaged range.

A01 High pressure

switch alarm

Digital input / high

pressure switch

enabled


activated


The icon for high pressure alarm flashes


Manual

The digital input is disabled and the

resetting procedure is carried out

Condensation fan

thermal protection

Digital input

enabled


activated




Manual

Digital input disabled and the resetting

procedure is carried out

A02 Low pressure

switch alarm

Digital input / low

pressure switch

enabled


activated


The icon for low pressure alarm flashes


Automatic

It becomes manual after the value set of

“tripping per hour”

Manual

The digital input is disabled and the

resetting procedure is carried outA03 Ambient air low

temperature alarm

Analogue input

enabled


activated




Automatic

A04 Unit outlet air low

temperature alarm

(not enabled)

Analogue input

enabled


activated




Automatic

It becomes manual after nr. “tripping per hour”

A05 High temperature

High pressure

Analogue input

enabled if BAT1 >

of “set value”


activated


The icon for high pressure alarm flashes


Manual

Disabled if BAT1 < than “set value” and the


A06 Low pressure /

temperature alarm

Analogue input

enabled if BAT1 <

“set value”


activated


The icon for low pressure alarm flashes


Automatic

It becomes manual after “tripping per hour”

Manual

Disabled if BAT1 > than “set value” and the


37OPERATING AND MAINTENANCE MANUALChapter 12 - alarms


A07 Antifreeze alarm Digital input

enabled if BTWOT

< “set value” and

actives for the “time set”


activated




Automatic


Manual

Disabling:

- when the antifreeze regulation probe

BTWOT > “set value” in chiller modality;

and resetting procedureA07 Antifreeze alarm Digital input

enabled


activated




Automatic


Manual

Disabling: digital input not enabled

resetting procedureA07 Antifreeze alarm

motocondensing

units (Not enabled)

Digital input

enabled


activated




Automatic


Manual

Disabling: digital input not enabled

resetting procedureA08 Flow meter alarm

and pump thermal

alarm (air/water or

water/water units)

Digital input

enabled

enabled for “time set”


activated


The icon for flow meter alarm flashes


Automatic


Manual

Disabling: Digital input disabled for “time set” and reset procedure

A09 Compressor 1

thermal alarm

Digital input

enabled


activated




Manual



A10 Compressor 2

thermal alarm

Digital input

enabled


activated




Manual



A09-A10

Compressor 1-2

thermal alarm

The alarm is

visualized but not

enabled during

“compressor thermal delay time” after compressor

start up

Relay alarm + buzzer activated If ID is not activated

Manual

To reset the alarm enter the programming

A11 Condensation fan

(Not enabled)

Digital input

enabled


activated




Manual



A12 Error alarm during

defrosting (not

enabled

Defrosting end

(max. time)

Displayed code

Only signalling

Automatic

With following correct defrosting cycle

Manual

Reset procedureA13 Compressor 1

maintenance alarm

Operating hours >

“set threshold”


activated



Manual

Operating hours reset

A14 Compressor 2

maintenance alarm

Operating hours >

“set threshold”


activated



Manual


A15 Water pump

maintenance alarm

Operating hours>

“set threshold”


activated



Manual


A20 Low water temperature alarm at evaporator outlet

Only units operating if the temperature measured by PB2 is lower than AL23

“open collector” outlet / alarm relay activatedThe buzzer is activatedThe alarm code is displayed

Automatic

CODE MEANING CAUSE ACTION RESET



A21 High water temperature alarm at evaporator outlet

Only units operating if the temperature measured by PB2 is higher than AL24

“open collector” outlet / alarm relay are activatedThe buzzer is activatedThe alarm code is displayed

Automatic

rtC Clock alarm Clock to be

regulated


activated




Manual

Clock regulation and resetting procedure

rtF Clock alarm Clock damaged

Clock malfunction


activated




Manual

Resetting procedure

If after resetting the alarm persists replace

the clock

EE Eeprom error alarm Memory data lost “open collector” outlet / alarm relay is

activated




Manual

Resetting procedure

If after resetting the alarm persists the

device remains blocked

ACF2 Configuration alarm Unit configured as

heat pump with

commutation valve

not configured


activated




Automatic

With correct re-programming

ACF3 Configuration alarm Two digital inputs

with the same

configuration


activated




Automatic


ACF4 Configuration alarm CF28= 1 and the

digital input not

configured or

CF28= 2 probe

BAT1 different from

3


activated




Automatic


FErr Operating alarm with two digital

inputs enabled at the

same time



Manual

Disabling of digital inputs + reset procedure

AFr Net frequency

alarm

Net frequency out of

range


activated




Automatic

Net frequency into operating range

ALOC General alarm ID configured as

unit blocked generic

alarm “time set”

AL21

Relay alarm + buzzer activated ID configured as unit blocked generic alarm

“fixed time”

Automatic:

It becomes manual after “tripping per hour set” (reset procedure in function menu). It is

memorized in the alarm historic only with

manual rearm

CODE MEANING CAUSE ACTION RESET

39OPERATING AND MAINTENANCE MANUALChapter 12 - alarms


1 2 . 2 O u t l e t b l o c k i n g

NOTEThe electronic control board is furnished with a “history” loop, see chapter 7.12.5 “How to display the alarm historic “ALoG”” .

Alarm code Alarm Description Comp. 1 Comp. 2 Antifreeze Resistances Pump

P1 BEWOT probe Yes Yes Yes

P2 BTWOT probe Yes Yes Yes

P3 BCP1 probe Yes Yes Yes

P4 BAT1 probe Yes Yes Yes

A01 High pressure switch Yes Yes

Fan thermal protection Yes Yes

A02 Low pressure switch Yes Yes

A03 Ambient air low temperature

A04 Air low temperature at unit outlet

Yes Yes Yes

A05 High temperature High pressure

Yes Yes

A06 Low pressure Low temperature

Yes Yes

A07 Analogue input antifreeze Yes Yes

A07 Digital input antifreeze Yes Yes

A07 Motorcondensing antifreeze Yes Yes

A08 Flow meter/pump thermal protection

Yes Yes Boiler Res. Yes

Yes

A09 Compressor 1 thermal protection

Yes

A10 Compressor 2 thermal protection

Yes

A09-A10 Compressor 1-2 thermal protection

Yes Yes

A13 Compressor 1 maintenance

A14 Compressor 2 maintenance

A15 Water pump maintenance

A20 Low water temperature BTWOT

A21 High water temperature BTWOT

rtC Clock alarm

rtF Clock alarm

EE Eeprom error Yes Yes Yes Yes

ACF2 Configuration alarm Yes Yes Yes Yes




FErr Operating error (motorcond.)

Yes Yes Yes

Afr Net frequency alarm Yes Yes Yes Yes

ALOC Generic alarm Yes Yes Yes Yes

taeevo - ics cool energy...chapter 1 - general information taeevo015÷351 the data in this manual...

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